My mother recently died and left no will. My older brother has appointed himself to sort out her affairs without my consent and is forcing me to sign a form to release her pension. I do not trust that he will share the money and refuse to sign with more information about her affair. Now he is say that he will imform HSBC that I have mental health issues and unable to sign. I do have bi-polar but currently am well. I do not have access to the death certificate.